/* * Copyright 2012-2015 org.opencloudb. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.opencloudb; import java.text.SimpleDateFormat; import java.util.Date; import org.apache.log4j.LogManager; import org.apache.log4j.helpers.FileWatchdog; import org.apache.log4j.helpers.LogLog; import org.apache.log4j.xml.DOMConfigurator; /** * @author mycat */ public final class Log4jInitializer { private static final String format = "yyyy-MM-dd HH:mm:ss"; public static void configureAndWatch(String filename, long delay) { XMLWatchdog xdog = new XMLWatchdog(filename); xdog.setName("Log4jWatchdog"); xdog.setDelay(delay); xdog.start(); } private static final class XMLWatchdog extends FileWatchdog { public XMLWatchdog(String filename) { super(filename); } @Override public void doOnChange() { new DOMConfigurator().doConfigure(filename, LogManager.getLoggerRepository()); LogLog.warn(new SimpleDateFormat(format).format(new Date()) + " [" + filename + "] load completed."); } } }